[Ch15] Version of the RunThreads code for the book

  public static void main(String[] args) {

    ExecutorService threadPool = Executors.newFixedThreadPool(2);

    threadPool.execute(() -> run("Job 1"));

    threadPool.execute(() -> run("Job 2"));

    threadPool.execute(() -> runJob("Job 1"));

    threadPool.execute(() -> runJob("Job 2"));

    threadPool.shutdown();

  }

  public static void run(String jobName) {

  public static void runJob(String jobName) {

    for (int i = 0; i < 25; i++) {

      String threadName = Thread.currentThread().getName();

      System.out.println(jobName + " is running on thread " + threadName);

      System.out.println(jobName + " is running on " + threadName);

    }

  }

}

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